I wrote somewhere once that the third-rate mind was only happy when it was thinking with the majority, the second-rate mind was only happy when it was thinking with the minority, and the first-rate mind was only happy when it was thinking. With equal truth it may be said that a first-rate mind is not one which does not remember the past, nor is it one which cannot forget the past; it is a mind which will use the past but not be ordered by it. It is a mind independent of everybody and everything but the facts in front of it. It is as little perturbed to find itself sharing a thought with the simple as it is elated to find itself sharing a thought with the subtle.

A. A. Milne (1882-1956) English poet and playwright [Alan Alexander Milne]

War with Honour, Macmillan War Pamphlets, Issue 2 (1940)
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Milne wrote this work in repudiation (or perhaps emendation) of his 1934 book, Peace with Honour, which argued that, given the tragedy of World War 1, that similar saber-rattling about the rise of Hitler's Germany was irresponsible and immoral. Having seen the course of fascism in the first years of World War 2, while still espousing pacifist principles, he saw Hitler as an evil that must be defeated.